This math topic focuses on converting measurements of speed, with problems involving different time units to express the speed of various moving objects like bugs, bacteria, and a car. It emphasizes calculations of speed from given distances and time spans, subsequently converting these speeds into different units such as meters per day, millimeters per hour, centimeters per hour, and millimeters per second. These problems help in understanding and practicing speed conversions and unit changes within the broader context of speed, distance, and time. Multiple-choice answers are offered for each question to test understanding.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Speed - Distance and Time to Speed - Changed Time Units Worksheet

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Speed - Distance and Time to Speed - Changed Time Units
1
A bug crawls 3,000cm in 60min. How fast is this in cm/d?
a
72,000 cm/d
b
720,000 cm/d
c
125 cm/d
d
720 cm/d
2
A bug crawls 800m in 40d. How fast is this in m/hr?
a
768,000 m/hr
b
0.3 m/hr
c
1.7 m/hr
d
0.833333 m/hr
3
A bacteria moves 2,000mm in 50hr. How fast is this in mm/s?
a
360,000,000 mm/s
b
0.1 mm/s
c
0.5 mm/s
d
0.01111111 mm/s
4
A bug crawls 3,000cm in 60hr. How fast is this in cm/s?
a
0.9 cm/s
b
648,000,000 cm/s
c
0.0139 cm/s
d
0.6 cm/s
5
A car drives 1,200mm in 60ms. How fast is this in mm/s?
a
20,000 mm/s
b
200 mm/s
c
200,000 mm/s
d
72 mm/s
6
A spaceship flies 1,500km in 50s. How fast is this in km/ms?
a
0.6 km/ms
b
75,000,000 km/ms
c
0.03 km/ms
d
0.3 km/ms
7
A bacteria moves 800mm in 40d. How fast is this in mm/min?
a
0.8 mm/min
b
46,080,000 mm/min
c
0.013889 mm/min
d
0.3 mm/min
8
A horse trots 1,400cm in 70s. How fast is this in cm/min?
a
1,200 cm/min
b
1,633.3 cm/min
c
12,000 cm/min
d
120,000 cm/min